In this paper, we study the effect of processing by weak pulses of a magnetic field on the emission and magnetic properties of the surface layer of amorphous Fe(SiBNb) alloys used in electrical devices. The method of gas-discharge visualization is used to identify areas of local disturbance of the electric field on microroughnesses of the surface. Changes in the characteristics of alloys are explained by the presence of microimpurities, which initiate the reordering of atoms under the effect of magnetic pulses; this intensifies the transfer of charges between metalloids and magnetoactive atoms. Investigation of the energy spectrum of emitted electrons allows a conclusion to be drawn about the prevalence of quantum-size effects in the processes of electron emission.
The therapeutic efficiency of medicines containing the same active ingredient depends on the production technology, as well as the excipients included in the tablet and the type of shell. In this work, we consider some of the possibilities of using the gas-discharge visualization method based on the phenomenon of channeling electrons through a liquid medium to study aqueous solutions of medicines. The study was carried out on the example of the passage of kilovolt electrons through drops of solutions of the beta-blocker bisoprolol, produced by various pharmacological companies. We studied bisoprolol preparations without excipients and bisoprolol preparations with excipients. The obtained differences in the characteristics of the gas-discharge luminescence for the studied medicines open up prospects for assessing the quality and pharmacological efficiency of medicines, and, subsequently, for the individualization of medicines therapy.
A study is performed of the effect a weak pulsed magnetic field has on the surface state, emission, and magnetic properties of amorphous magnetic Fe(SiBNb) alloys. It is found that explosive electron emission can be initiated upon an increase in the intensity of the electric field, due to nanosized areas of oxides with higher resistivity on the surface of the metal.
The channeling of kilovolt electrons passing through an isotropic micellar solution of a surfactant is used to study the effect weak magnetic field pulses have on short-range order in the arrangement of molecular associates. It is found that magnetic pulse treatment of this solution results in the short-range order of micellar structures. The results demonstrate the possibility of using the channeling of low-energy electrons to study the features of the effect of magnetic pulse treatment on short-range order in the arrangement of atoms or molecular associates.
The features of the emission and passage of electrons in structured aqueous solutions of low-concentration liquid crystals are studied. The investigated materials are low-concentration aqueous solutions of molecular complexes of the surface-active substance cetyltrimethyl ammonium bromide. The weighted droplets of an aqueous solution are studied, electron emission from the surface and from the volume of which was stimulated by bipolar electrical pulses. Analysis of the results showed that at surfactant concentrations of up to about 1.5 × 10–4 mol % the isotropic emission of electrons from the surface of the aqueous solution is observed. At high concentrations of long-chain molecules, the surfactants form aggregates (micelles) ordered along the four directions. This ensures the formation of channels of the facilitated anisotropic emission of electrons from the volume of the solution. The obtained experimental data make it possible to determine the shape of the molecular complexes, their spatial orientation and the nature of the ordering.
The article presents the study of using low-energy electrons to determine the positional order and features of the interaction between micelles and electrons passing through a colloidal solution.The transformation in the positional order in the arrangement of micelles with a change in the concentration of surfactants in a solution are associated not only with their geometric factor, but also with the intensity of intermicellar interaction.
The features of the field electron emission through a drop of a colloidal solution of a surfactant (structured colloidal solution of cetyltrimethylammonium bromide) are studied. The results indicate the possibility of using data on the angular distribution of the electron emission intensity stimulated by a pulsed electric field from structured liquid media to study the positional order and geometry of molecular associates in solutions.
The influence of electromagnetic field pulses on the positional order of associates (micelles) in aqueous solutions of cetyltrimethylammonium bromide (CTAB) with a concentration of 0,14 divided by 54,88 x 10(-3) M was investigated. The method of gas-discharge visualization (GDV) has been used to study their positional order for the first time. The method provides obtaining of stereographic projections of electron emission patterns from solution. The obtained pictures of gas-discharge glow of solutions allowed to establish the existence of planes with the closest packing of micelles, their spatial orientation, and as a consequence, a symmetry class of the structure formed in solution was also determined. The sequence of structural transformations in solution after exposure to magnetic field pulses at various CTAB concentrations was studied.
The impact weak pulses of a magnetic field have on the structure of micellar aqueous solutions of bromide cetyl- trimethylammonium is determined experimentally via gas-discharged visualization. The type of optoelectronic emission patterns depends on the number of magnetic field pulses and corresponds to different modifications of planes of cubical and hexagonal packing.